K & J Food Store
Route and Intro Coordinate System:
Examples of routes
Linear geometry
Route baseline
Horizontal alignment
Plan View
Vertical Alignment
Profile View
Route Coordinates vs Cartesian Coordinates
Station, Offset, Elevation
Northing, Easting, Elevation
Stationing conventions -- interval
Horizontal Alignment Design:
Stationing Plans Resolution
Stationing Calculation Resolution
Offset
Elevation Datums
Baseline design process
Set up cartesian system
Choose begin project, station, northing, easting, reference azimuth
Set PI's
Choose TTLs
Choose Deltas
Calculate Azimuths
Calculate PI coordinates
[pic]
Horizontal Curve Design and Calculation:
circular horizontal curves
PI, PC, PT
delta
degree of curve
radius
tangent
length
long chord
middle ordinate
external distance
station the alignment
TTL vs TL
station of PC
station of PT
[pic]
Finish Horizontal and Begin Vertical Alignment Features:
station of the PI
cartesian coordinates
coordinates of PC, PI, PT, radius point
Vertical:
location survey
profile survey
profile drawing
horizontal scale vs horizontal scale
vertical exaggeration
plot existing ground profile
choose PVI's station and elevation
compute grade of vertical tangents
observe cut and fill
Vertical Alignment Design: PVI station and elevation
vertical parabolic curves
equal tangent property
calculate PVC,PVT station and elevation
total rotation A
curve length L
rate of vertical rotation, r
inverse of r, K
Vertical Curve Equation and Elevation:
typical values of %grade
calculation of vehicle slope any where on curve
find station of turning point
derive vertical curve equation
boundary conditions
calculate curve elevations
calculate elevation of turn point
Cross Section Intro:
Cross-Sections Intro
cross section pattern lines, width
cross section interval
cross section survey
ground modeling
breaks in grade
cross section paper, setup
plot existing ground cross section
design typical section
pavement width
pavement crown, cross slope
pavement box, pavement and rock base
shoulder
side slope
edge pavement, edge shoulder, top of slope, toe of slope, bottom of slope, slope limits, construction limits
plot design cross section
scale slope limits
identify offset/elevation of each point of an "end area" polygon
[pic]
Cross Section Areas:
plot existing ground cross section
plot profile grade point (elevation of baseline)
plot proposed surface following typical section
determine offset/elevation coordinates for each vertex
identify cut and fill end-areas
calculate area of end-area by coordinates
Surface Modeling:
three digital surface models
defects of the field cross section model
The contour model
photogrammetry
cutting cross sections from a contour model
digital Terrain Models
TIN's
controling points and features (break lines)
cutting cross sections from a TIN
advantages of a contour or TIN
Volume Calculations:
end area calculations
visualization of earthwork volumes
prism volumes
prismoids
average end area approximation
prismoidal formula
earthwork volumes by average end area
station of last filling/first cutting
tabulation of areas and volumes
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